Dishwasher with upwardly extensible distributor



Nov. 29, 1966 H.JORDAN ETAL 3,288,156

DISHWASHER WITH UPWARDLY EXTENSIBLE DISTRIBUTOR Filed Nov. 19, 1964 2Sheets-Sheet l jA/l Elvroes. jnfmvs Japan/4N, CUA/FJA/ MAC/A5,

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DISHWASHER WITH UPWARDLY EXTENSIBLE DISTRIBUTOR Nov. 29, 1966 Filed Nov.19, 1964 Hiwms, 15/504 13215554 4, ffl /w United States Patent 3,288,156DISHWASHER WITH UPWARDLY EXTENSIBLE DISTRIBUTOR Hans Jordan, LosAngeies, and Julian F. Macias, La Mirada, Calif, assignors to Waste KingCorporation, Los Angeles, Calif, a corporation of California Filed Nov.19, 1964, Ser. No. 412,454 4 Claims. (Cl. 134-176) The present inventionrelates in general to dishwashers and, more particularly, to an improvedsystem for distributing water over dishes carried by racks within thetub of a dishwasher.

As background, the invention contemplates a dishwasher having verticallyspaced upper and lower dish racks within the tub thereof, and having awater distributing system, for spraying water against dishes carried bythe upper and lower racks, which is supplied by a pump having its inletin communication with the bottom of the tub. As is conventional, thewater distributing system includes a reaction-type lower waterdistributor rotatable about a vertical axis between the lower dish rackand the bottom wall of the tub and adapted to spray water upwardlyagainst dishes carried by the lower rack.

' A primary object of the invention is to provide a centrally-locatedupper water distributor which is extensible upwardly, by water underpressure delivered thereto by the pump, to spray such water upwardlyagainst dishes carried by the upper rack, and which is contractibledownwardly to a level below the lower rack when no water is deliveredthereto, the lower rack having a central opening to receive the upperwater distributor when it is in its extended condition.

An important object of the invention is to utilize an upper waterdistributor of the foregoing construction in a front loading dishwasherso that the lower dish rack may be moved into and out of the tub througha doorway in the front wall thereof without interference by the upperwater distributor when it is in its contracted condition. Consequently,it is unnecessary to bifurcate the lower dish rack to accommodate theupper water distributor, which is an important feature of the invention.

Considering the invention more specifically now, an important objectthereof is to mount the rotary lower water distributor and thevertically extensible and contractible, upper water distributor on avertical tubular manifold centrally located in the tub below the lowerdish rack and communicating at its lower end with the outlet of thepump, the manifold being provided intermediate its upper and lower endswith radial outlets which cornmunicate with the lower water distributorand being provided at its upper end with an axial outlet whichcommunicates with the upper water distributor.

A further object of the invention is to provide a telescoping upperwater distributor having sections which are telescoped downwardly intothe manifold when the upper water distributor is in its contractedcondition.

Still another object of the invention is to provide a water distributingmeans of the foregoing nature wherein the manifold mentioned is mountedon the upper end of the housing of a vertically-oriented axial flow pumpcarried by the bottom wall of the tub between such bottom wall and thelower dish rack. A related object is to provide the upper waterdistributor with telescoping sections which are seated on an outlet vaneassembly of the axial flow pump when the upper water distributor is inits contracted condition.

An important object of the invention is to provide the upper waterdistributor with a reaction-type water distributing element rotatablymounted thereon at its upper end, such water distributing element actingto spray water upwardly against dishes carried by the upper dish rack.

Still more specific objects of the invention are to provide a frontloading dishwasher which includes: a tub provided with a front wallhaving a doorway therein and provided with a bottom wall; verticallyspaced upper and lower dish racks in the tub and mounted for movementinto and out of the tub through the doorway; the lower dish rack beingspaced upwardly from the bottom wall of the tub; a vertically oriented,axial flow pump centrally located in the tub below the lower dish rackand carried by the bottom wall of the tub; the pump including a pumphousing which contains an axial flow impeller rotatable about a verticalaxis and which is provided at its upper end with an axial outletcontaining an outlet vane assembly; a vertical tubular manifold on theupper end of the pump housing and registering at its lower end with theaxial outlet in the pump housing, the manifold having radial outletsintermediate its upper and lower ends and having an axial outlet at itsupper end; a reaction-type lower water distributor rotatably mounted onthe manifold intermediate its upper and lower ends and below the lowerdish rack and communicating with the radial outlets in the manifold; avertically extensible and contractible, telescoping, upper waterdistributor mounted on the manifold in communication with the axialoutlet therein and extensible upwardly by water under pressure deliveredthereto by the pump; the lower dish rack having a central opening toreceive the upper water distributor when it is in its extendedcondition; the upper water distributor having sections which aretelescoped downwardly into the manifold and seated on the outlet vaneassembly when the upper water distributor is in its contractedcondition; the upper end of the upper water distributor being below thelower dish rack when it is in its contracted condition and being abovethe bottom of the lower dish rack when it is in its extended condition;

and the upper water distributor having a reaction-type waterdistributing element rotatably mounted thereon at its upper end.

Another object of the invention is to provide a centrally-located waterdistributing system which includes means for directing a jet of waterupwardly against another means, carried by the top wall of the tub, fordeflecting the jet outwardly and downwardly against dishes carried bythe upper rack.

The foregoing objects, advantages, features and results of the presentinvention, together with various other objects, advantages, features andresults thereof which will be evident to those skilled in the dishwasherart in the light of this disclosure, may be achieved with the exemplaryembodiments of the invention described in detail hereinafter andillustrated in the accompanying drawings, in which:

FIG. 1 is a front elevational view of a front loading dishwasherincorporating the water distributing means of the invention, parts ofthe front of the dishwasher being broken away to reveal the internalstructure thereof;

FIG. 2 is an enlarged, fragmentary vertical sectional view of the waterdistributing means of the invention showing a vertically extensible andcontractible, telescoping, upper water distributor thereof in itsextended condition;

FIG. 3 is a view similar to FIG. 2, but showing the upper waterdistributor in its contracted condition;

FIG. 4 is a horizontal sectional view taken along the arrowed line 44 ofFIG. 2;

FIG. 5 is a top plan view of a reaction-type water distributing elementrotatably mounted on the upper water distributor at its upper end;

FIG. 6 is a fragmentary view, partially in elevation and partially insection, taken as indicated by the arrow 6 of FIG. 3;

FIG. 7 is a top plan view of an alternative upper water distributor ofthe invention;

FIG. 8 is a fragmentary vertical sectional view taken as indicated bythe arrowed line 8-8 of FIG. 7; and

FIG. 9 is a fragmentary vertical sectional view illustrating stillanother embodiment of the invention.

FIGS. 1 TO 6 Referring initially to FIG. 1 of the drawings, illustratedtherein is a front loading dishwasher 10 which includes a tub 12 havinga front wall 14 provided therein with a doorway 16 adapted to be closedby a forwardly and downwardly opening front door 18 mounted on alignedhorizontal pivots 20. Within the tub 12 are vertically spaced upper andlower dish racks 22 and 24 respectively mounted on guide means 26 and 28for movement into and out of the tub 12 through the doorway 16 in theconventional manner. The foregoing structure is typical of front loadingdishwashers so that a more detailed description is unnecessary.

The dishwasher tub 12 includes a bottom wall 30 which is spaceddownwardly from the lower rack 24 and which is provided therein with acentral well 32 containing a vertically oriented, axial flow pump 34centrally located with respect to the tub 12. The pump 34 forms part ofa motor-pump assembly 36 suitably mounted on the bottom wall of thecentral well 32. The motor-pump assembly 36 includes a motor 38 coaxialwith and directly connected to the pump 34.

Turning now to FIG- 2 of the drawings, the pump 34 includes a verticallyoriented housing 40- provided at its lower end with radial inlets, notshown, in communication with the bottom of the well 32, as shown, forexample, in Patent No. 3,058,497, granted October 16, 1962 to John A.Fay et al. Rotatable within the pump housing 40 about a vertical axis isan axial flow impeller 42 which is directly coupled to the armature, notshown, of the motor 38. At the upper end of the pump housing 40 is anupwardly facing, axial outlet 44. Carried by the pump housing 40 withinthe axial outlet 44 is an outlet vane assembly 46 comprisingflow-straightening radial vanes 48 and a central hub 50.

A vertically oriented, tubular outlet manifold 52 is mounted on theupper end of the pump housing 40 with its lower end in register with theaxial outlet 44, as by pressing a depending annular skirt 54 on themanifold over the upper end of the pump housing. The manifold 52 isprovided intermediate its upper and lower ends with a cylindricalsection 56 on which is journalled a hub 58 of a lower water distributor60 rotatable in a horizontal plane between the lower rack 24 and thebottom wall 30 of the tub 12. Water discharged into the manifold 52 bythe pump 34 enters the interior of the lower water distributor 60through radial outlets 62 in the cylindrical section 56 of the manifold.As is conventional, the hub 58 of the lower Water distributor 60 carriesdiametrally opposed arms 64 provided with discharge openings 66 throughwhich water is sprayed upwardly against dishes in the lower rack 24. Atleast some of the discharge openings 66 are so oriented as to impartrotational movement to the lower water distributor 60. The downwardreaction force applied to the lower water distributor 60 by the upwardlydirected jets of water emanating from the discharge openings 66 isresisted by a thrust bearing 68 carried by the lower water distributorand seated on an upwardly facing annular shoulder 70 on the manifold 52at the junction of the cylindrical section 56 of the manifold with areduced-diameter section 72 thereof.

The reduced diameter section 72 of the manifold 52 may be regarded asproviding the manifold with an upwardly facing, axial outlet 74 at itsupper end. Communicating with the axial outlet 74 is a verticallyextensible and contractible, telescoping, upper water distributor 4 76of the invention. As will be described, the upper water distributor 76is extensible upwardly into a central opening 78 in the lower rack 24 bywater under pressure delivered thereto by the pump 34, and is adapted tospray such water upwardly against dishes in the upper rack 22, asindicated in FIG. 1 of the drawings. When the dishwasher 10 is not inoperation, the upper water distributor 76 contracts downwardly, underthe influence of gravity, and is located completely beneath the lowerrack 24, as shown in broken lines in FIG. 1 of the drawings. Under suchconditions, the lower rack 24 may be moved into and out of the tub 12through the doorway 16 without interference by the upper waterdistributor 76, and without any necessity for bifurcating the rear halfof the lower rack to accommodate the upper water distributor, which areimportant features of the invention.

Considering the upper water distributor 76 in more detail, it is shownas including telescopically interconnected lower and upper sections 80and 82 capable of being telescoped downwardly into the manifold 52 andto seat on the hub 50 of the outlet vane assembly 46, as shown in FIG. 3of the drawings. More particularly, the lower telescoping section 80 ofthe upper water distributor 76 is guided by the reduced diameter section72 of the manifold 52, and upward movement of the lower section 80 islimited by engagement of an external annular flange 84 at the lower endthereof wit-h a downwardly facing annular shoulder 86 on the manifold 52at the junction of the sections 56 and 72 thereof. The upper telescopingsection 82 of the upper water distributor 76 is guided by a reduceddiameter section 88 at the upper end of the lower telescoping section80. Upward movement of the upper telescoping section 82 is limited byengagement of an external annular flange 90 at the lower end thereofwith a downwardly facing, internal annular shoulder 92 on the lowertelescoping section 80 at the lower end of the reduced diameter section88 thereof.

The upper telescoping section 82 is provided at its upper end with aspider 94 supporting a central vertical spindle 96 over which istelescoped a hub 98 of a cupshaped, reaction-type water distributingelement 100 secured against removal by a screw 102. The waterdistributing element 100 has a depending annular skirt 104 whichregisters with and is of substantially the same diameter as the upperend of the upper telescoping section 82, there being a relatively closerunning fit between the periphery of the skirt 104 and the upper end ofthe upper telescoping section 82 to minimize leakage therebetween.

The water distributing element 100 is provided therein with at least twoupwardly and outwardly directed, tangentially oriented water dischargeopenings 106. These openings spray the water delivered to the upperwater distributor 76 outwardly and upwardly against dishes carried bythe upper rack 22, and simultaneously impart rotational movement to thewater distributing element 100 about a vertical axis. With thisconstruction, complete blanketing of the upper reaches of the tub 12 bythe water sprayed upwardly by the water distributing element 100 isassured. In this connection, it will be noted from FIG. 1 of thedrawings that when the upper water distributor 76 is in its extendedcondition, the water distributing element 100 is located suflicientlyclose to the upper end of the central opening 78 in the lower rack 24that the lower rack does not interfere with the upward and outward spraydirected toward the upper rack 22.

Operation It is thought that the over-all operation of the inventionwill be clear from the foregoing description so that only a briefdiscussion is necessary at this point.

When the pump 34 is not in operation, the action of garvity causes thelower and upper telescoping sections 80 and 82 of the upper waterdistributor 76 to telescope downwardly into the manifold 52 and to seaton the hub 50 of the outlet vane assembly 46. To insure that the upperwater distributor 76 will assume its contracted condition under theinfluence of gravity, ample clearances are provided, as clearly shown inFIG. 3 of the drawings.

When the upper water distributor 76 is in its contracted condition, thetop of the water distributing element 100 is below the level of thebottom of the lower rack 24. Consequently, the lower rack 24 can bewithdrawn from the tub 12 through the doorway 16 in the conventionalmanner without interference by the upper water distributor 76, andwithout any necessity for bifurcating the rear half of the lower rack,which are important features.

When the dishwasher is in operation, and the pump 34 is running, part ofthe water discharged by the pump 34 is sprayed upwardly against dishesin the lower rack 24 by the lower water distributor 60. The remainder ofthe water discharged by the pump enters the upper water distributor 76,and the pressure thereof extends the lower and upper telescoping section80 and 82 upwardly into their uppermost positions, as shown in FIGS. 1and 2 of the drawings. Further, the water entering the extended waterdistributor 76 is ultimately discharged therefrom through the waterdistributing element 100, which sprays water upwardly and outwardlyagainst dishes in the upper rack 22, and which rotates as it does so toblanket the entire upper regions of the tub 12 with the water sprayedtherefrom.

The water pressure within the upper water distributor 76 urges theannular flanges 84 and 90 against the respective annular shoulders 86and 92 sufficiently tightly to minimize leakage at these points.Preferably, the lower and upper telescoping sections 80 and 82 of theupper water distributor 76 are made of polyethylene, or a similarmaterial. The advantages of such a material are that it will providedfluid tight seals between the annular flanges 84 and 0 and therespective annular shoulders 86 and 92, and will also insure downwardcontraction of the upper and lower telescoping sections, when the pump34 is not in operation, because of the low coeflicient of friction ofsuch material.

FIGS. 7 AND 8 FIGS. 7 and 8 illustrate fragmentarily an alternativeupper water distributor 110 having an upper telescoping section 112surmounted by an alternative water distributing device 114. The latteris shown as comprising an inverted, cup-shaped, reaction-type waterdistributing element 116 generally similar to the water distributingelement 100 and mounted on a spider 118 at the upper end of the uppertelescoping section 112 in a manner similar to the water distributingelement 100. The water distributing element 116 is provided withdischarge openings 120 which spray water outwardly and upwardly againstdishes in the upper rack 22, and which are so oriented that theysimultaneously rotate the element 116. The principal difference betweenthe water distributing element 116 and the water distributing element100 is that the former has a larger diameter than the upper end of theupper telescoping section 112, so that water can escape from between theupper end of the telescoping upper section 112 and the periphery of adepending annular skirt 122 of the element 116. Such escaping waterimpinges on an upwardly facing, saucer-like annular deflector 124mounted on the upper end of the upper telescoping section 112. Thisdeflector directs the water impinging thereon upwardly toward the upperrack 22 in a generally cone-shaped spray to further blanket the upperregions of the tub L2.

The over-all operation of the structure of FIGS. 7 and 8 is similar tothat of FIGS. 1 to 6 so that a more detailed description is notrequired.

It will be understood that still other water distributing devices can besubstituted for the element 100. For example, a distributor similar tothe distributor 60, but having a much smaller diameter, may be used.

6 FIG. 9

FIG. 9 illustrates fragmentarily another alternative upper waterdistributor having an upper telescoping section 132 surmounted by aninverted, cup-shaped, reaction-type water distributing element 134substantially identical to the water distributing element 100. The waterdistributing element 134 is rotatably mounted on a spider 136 by meansof a screw 138 similar to the screw 102.

An important feature of the water distributor 130 is that the screw 138is provided therethrough with an axial passage 140 capable of producingan upwardly directed water jet 142, FIG. 1. The water jet 142 passesupwardly through a central opening 144 in the upper rack 22 and impingeson means 146, mounted on the top wall 148 of the tub 12, for deflectingthe jet outwardly and downwardly against dishes carried by the upperrack. The means 146 may take various forms, being illustrated as apropeller-like or fan-like member mounted for rotation about a verticalaxis and including blades 150.

With the foregoing construction, water is sprayed against dishes carriedby the upper rack 22 from above, as well as from below, therebyobtaining improved washing and rinsing of such dishes.

Although exemplary. embodiments of the invention have been disclosedherein for purposes of illustration, it will be understood that variouschanges, modifications and substitutions may be incorporated in suchembodiments without departing from the spirit of the invention asdefined by the claims which follow.

We claim:

1. In a front loading dishwasher, the combination of:

(a) a tub provided with a front wall having a doorway therein andprovided with a bottom wall;

(b) vertically spaced upper and lower dish racks in said tub and mountedfor movement into and out of said tub through said doorway;

(c) said lower dish rack being spaced upwardly from said bottom wall ofsaid tub;

(d) a vertical tubular manifold centrally located in said tub below saidlower dish rack and carried by said bottom wall of said tub;

(e) a pump having an outlet communicating with the lower end of saidmanifold to deliver water thereto;

(f) said manifold having radial outlets intermediate its upper and lowerends and having an axial outlet at its upper end;

(g) a reaction-type lower water distributor rotatably mounted on saidmanifold intermediate its upper and lower ends and below said lower dishrack and communicating with said radial outlets in said manifold;

(h) a vertically extensible and contractible, telescoping, upper waterdistributor mounted on said manifold in communication with said axialoutlet therein and extensible upwardly by water under pressure deliveredthereto by said pum (i) said lower dis-h rack having a central openingto receive said upper water distributor when it is in its extendedcondition;

(j) said upper water distributor having sections which telescopedownwardly into said manifold when said upper water distributor is inits contracted condition; and

(k) the upper end of said upper water distributor being below said lowerdish rack when it is in its contracted condition and being above thebottom of said lower dish rack when it is in its extended condition.

2. In a front loading dishwasher, the combination of:

(a) a tubprovided with a front wall having a doorway therein andprovided with a bottom wall;

(b) vertically spaced upper and lower dish racks in said tub and mountedfor movement into and out of said tub through said doorway;

(c) said lower dish rack being spaced upwardly from said bottom wall ofsaid tub;

(d) a vertical tubular manifold centrally located in said tub below saidlower dish rack and carried by said bottom wall of said tub;

(e) a pump having an outlet communicating with the lower end of saidmanifold to deliver water thereto;

(f) said manifold having radial outlets intermediate its upper and lowerends and having an axial outlet at its upper end;

(g) a reaction-type lower water distributor rotatably mounted on saidmanifold intermediate its upper and lower ends and below said lower dishrack and communicating with said radial outlets in said manifold;

(h) a vertically extensible and contractible, telescoping, upper waterdistributor mounted on said manifold in communication with said axialoutlet therein and extensible upwardly by water under pressure deliveredthereto by said pump;

(i) said lower dis-h rack having a central opening to receive said upperwater distributor when it is in its extended condition;

(j) said upper water distributor having sections which telescopedownwardly into said manifold when said upper water distributor is inits contracted condi tion;

(k) the upper end of said upper water distributor being below said lowerdish rack when it is in its contracted condition and being above thebottom of said lower dish rack when it is in its extended condition; and

(1) said upper water distributor having a reaction-type waterdistributing element rotatably mounted thereon at its upper end.

3. In a front loading dishwasher, the combination of (a) a tub providedwith a front wall having a doorway therein and provided with a bottomwall;

(b) vertically spaced upper and lower dish racks in said tub and mountedfor movement into and out of said tub through said doorway;

(c) said lower dish rack being spaced upwardly from said bottom wall ofsaid tub;

(d) a vertically oriented, axial flow pump centrally located in said tubbelow said lower dis-h rack and carried by said bottom wall of said tub;

(c) said pump including a pump housing which contains an axial flowimpeller rotatable about a vertical axis and which is provided at itsupper end with an axial outlet;

(f) a vertical tubular manifold on the upper end of said pump housingand registering at :its lower end with said axial outlet in said pumphousing, said manifold having radial outlets intermediate its upper andlower ends and having an axial outlet at its upper end;

(g) a reaction-type lower water distributor rotatably mounted on saidmanifold intermediate its upper and lower ends and below said lower dishrack and communicating with said radial outlets in said manifold;

(h) a vertically extensible and contractible, telesco ing, upper waterdistributor mounted on said manifold in communication with said axialoutlet therein and extensible upwardly by water under pressure deliveredthereto by said pump;

(i) said lower dish rack having a central opening to receive said upperwater distributor when it is in its extended condition;

(j) said upper water distributor having sections which telescopedownwardly into said manifold when said upper water distributor is inits contracted condition; v

(k) the upper end of said upper water distributor being below said lowerdish rack when it is in its contracted condition and being above thebottom of said lower dish rack when it is in its extended condition; and

(1) said upper water distributor having a reaction-type waterdistributing element rotatably mounted thereon at its upper end.

4.'In a front loading dishwasher, the combination of:

(a) a tub provided with a front wall having a doorway therein andprovided with 'a bottom wall;

(b) vertically spaced upper and lower dish racks in said tub and mountedfor movement into and out of said tu-b through said doorway;

(c) said lower dish rack being spaced upwardly from said bottom wall ofsaid tub;

(d) a vertically oriented, axial flow pump centrally located in saidtu-b below said lower dish rack and carried by said bottom wall of saidtub;

(c) said pump including a pump housing which contains an axial flowimpeller rotatable about a vertical axis and which is provided at itsupper end with an axial outlet containing an outlet vane assembly;

(f) a vertical tubular manifold on the upper end of said pump housingand registering at its lower end with said axial outlet in said pumphousing, said manifold having radial outlets intermediate its upper andlower ends and having an axial outlet at its upper end;

(g) a reaction-type lower water distributor rotatably mounted on saidmanifold intermediate its upper and lower ends and below said lower dishrack and communicating with said radial outlets in said manifold;

(h) a vertically extensible and contractible, telescoping, upper waterdistributor mounted on said manifold in communication with said axialoutlet therein and extensible upwardly by water under pressure deliveredthereto by said pump;

(i) said lower dish rack having a central opening to receive said upperwater distributor when it is in its extended condition; I I

(j) said upper water distributor having sections which are telescopeddownwardly into said manifold and seated on said outlet vane assemblywhen said upper water distributor is in its contracted condition;

(k) the upper end of said upper water distributor being below said lowerdish rack when it is in its contracted condition and being above thebottom of said lower dish rack when it is in its extended condition; and

(1) said upper water distributor having a reaction-type waterdistributing element rotatably mounted thereon at its upper end.

References Cited by the Examiner UNITED STATES PATENTS 2,664,903 1/1954Sway 134-176 3,051,184 8/1962 Gibson 134-183 3,067,759 12/1962 Guth etal. 134-176 3,077,200 2/1963 Guth 134-176 3,144,034 8/1964 Lyman et al.134-183 X CHARLES A. WILLMUTH, Primary Examiner.

- R. L. BLEUTGE Assistant Examiner,

1. IN A FRONT LOADING DISHWASHER, THE COMBINATION OF: (A) A TUB PROVIDEDWITH A FRONT WALL HAVING A DOORWAY THEREIN AND PROVIDED WITH A BOTTOMWALL; (B) VERTICALLY SPACED UPPER AND LOWER DISH RACKS IN SAID TUB ANDMOUNTED FOR MOVEMENT INTO AND OUT OF SAID TUB THROUGH SAID DOORWAY; (C)SAID LOWER DISH RACK BEING SPACED UPWARDLY FROM SAID BOTTOM WALL OF SAIDTUB; (D) A VERTICAL TUBULAR MANIFOLD CENTRALLY LOCATED IN SAID TUB BELOWSAID LOWER DISH RACK AND CARRIED BY SAID BOTTOM WALL OF SAID TUB; (E) APUMP HAVING AN OUTLET COMMUNICATING WITH THE LOWER END OF SAID MANIFOLDTO DELIVER WATER THERETO; (F) SAID MANIFOLD HAVING RADIAL OUTLETSINTERMEDIATE ITS UPPER AND LOWER ENDS AND HAVING AN AXIAL OUTLET AT ITSUPPER END; (G) A REACTION-TYPE LOWER WATER DISTRIBUTOR ROTATABLY MOUNTEDON SAID MANIFOLD INTERMEDIATE ITS UPPER AND LOWER ENDS AND BELOW SAIDLOWER DISH RACK AND COMMUNICATIING WITH SAID RADIAL OUTLETS IN SAIDMANIFOLD; (H) A VERTICALLY EXTENSIBLE AND CONTRACTIBLE, TELESCOPFOLD INCOMMUNICATION WITH SAID AXIAL OUTLET THEREIN ING, UPPER WATERDISTRIBUTOR MOUNTED ON SAID MANIFOLD IN COMMUNICATION WITH SAID AXIALOUTLET THEREIN DELIVERED THERETO BY SAID PUMP; (I) SAID LOWER DISH RACKHAVING A CENTRAL OPENING TO RECEIVE SAID UPPER WATER DISTRIBUTOR WHEN ITIS IN ITS EXTENDED CONDITION; (J) SAID UPPER WATER DISTRIBUTOR HAVINGSECTIONS WHICH TELESCOPE DOWNWARDLY INTO SAID MANIFOLD WHEN SAID UPPERWATER DISTRIBUTOR IS IN ITS CONTRACTED CONDITION; AND